Invention Grant
US08423607B2 Fallback procedures for domain name server update in a mobile IP registration 有权
移动IP注册中域名服务器更新的后备程序

Fallback procedures for domain name server update in a mobile IP registration
Abstract:
A method and/or apparatus for intelligent domain name server selection are provided. A mobile device may wirelessly receive one or more domain name server Internet Protocol (IP) addresses from a network serving agent during a call setup or a network registration. The mobile device then determines whether one or more of the received domain name server IP addresses is valid prior to attempting to contact a domain name server associated with one of the received domain name server IP addresses. A fallback sequence of valid domain name server IP addresses may be generated and provided (either individually or as a group) from a link layer to an application layer for domain name resolution. Received domain name server IP addresses that are geographically closer to a current location of the mobile device or its visited network may be given priority.
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